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WO1999002418A1 - Hermetic seal and wide-mouthed bottle sealed by the seal - Google Patents

Hermetic seal and wide-mouthed bottle sealed by the seal Download PDF

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Publication number
WO1999002418A1
WO1999002418A1 PCT/JP1998/003092 JP9803092W WO9902418A1 WO 1999002418 A1 WO1999002418 A1 WO 1999002418A1 JP 9803092 W JP9803092 W JP 9803092W WO 9902418 A1 WO9902418 A1 WO 9902418A1
Authority
WO
WIPO (PCT)
Prior art keywords
seal
bellows
sealing
bottle
wide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP1998/003092
Other languages
French (fr)
Japanese (ja)
Inventor
Hiroshi Chino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aoki Technical Laboratory Inc
Original Assignee
Aoki Technical Laboratory Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aoki Technical Laboratory Inc filed Critical Aoki Technical Laboratory Inc
Priority to EP98931036A priority Critical patent/EP0943553A4/en
Priority to US09/254,788 priority patent/US6164470A/en
Priority to AU81280/98A priority patent/AU8128098A/en
Publication of WO1999002418A1 publication Critical patent/WO1999002418A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D79/00—Kinds or details of packages, not otherwise provided for
    • B65D79/005—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting
    • B65D79/0087—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a closure, e.g. in caps or lids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0006—Upper closure
    • B65D2251/0018—Upper closure of the 43-type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0068—Lower closure
    • B65D2251/0093—Membrane

Definitions

  • the present invention relates to a seal for sealing and a jar sealed by the seal, and more particularly, to a seal for sealing an opening of a synthetic resin jar having a thin body formed by stretch blow molding, and a seal thereby. It relates to a sealed jar. Background art
  • Bottles and jars formed by stretch-blowing injection-molded preforms have a thin wall of approximately 0.3 mm. Therefore, if the opening is closed with a cap immediately after the contents are heated and filled, the body is pulled inward and deformed due to the pressure reduction in the bottle due to cooling.
  • the torso section is formed into a polygonal shape, and the torso wall is formed on a panel surface that is easily bent inward. . This prevents partial deformation of the torso due to decompression, and at the same time, makes the panel surface of the torso wall uniform so as to improve the overall appearance.
  • the degree of bending of the panel surface is proportional to the area of the panel surface.
  • wide-mouthed bottles for storing viscous contents such as jam, peanut flour, and honey have an inner surface created by the formation of panel surfaces.
  • the contents easily remain in some corners. Because the deeper the corners, the more difficult it is to expose with a spoon, etc., and the outer periphery of the body, such as by applying a label, etc., there is a limit to the area of the molded panel surface.
  • the present invention has been conceived in view of the above demands, and has as its object to provide a seal that seals the opening of a wide-mouthed bottle, which can be expanded with decompression inside the bottle due to cooling of the contents. It is an object of the present invention to provide a seal for sealing a wide-mouth bottle by stretch blow molding capable of preventing the deformation of a part under reduced pressure, and a wide-mouth bottle sealed thereby.
  • a feature of the present invention for the above object is to provide a seal for sealing a mouth opening of a jar by stretch blow molding, the seal comprising a flat peripheral portion and an expandable portion inside the peripheral portion. .
  • the expandable portions formed at this time are formed as bellows which are alternately and multiplely bent into peaks and valleys.
  • the seal is preferably made of an aluminum sheet or an aluminum foil as a base, and a lamination sheet obtained by laminating a synthetic resin film.
  • the bellows formed on the seal are preferably concentric or spiral, and the height difference between the peaks and valleys of the bellows is about 1 to 1.5 cubic meters, and the gap between adjacent mountain valleys is Is preferably about 4 to 6 mm.
  • a feature of the present invention is a wide-mouthed bottle formed by stretch blow molding with a thin-walled body, the opening of which is sealed by a sealing seal, wherein the sealing seal has a flat peripheral portion and an inner expansion. It has a bellows force formed by bending in the peaks and valleys alternately and multiplely, and is formed in the same shape as the opening of the jar, and the opening is sealed by the seal while heating.
  • the sealing seal has a flat peripheral portion and an inner expansion. It has a bellows force formed by bending in the peaks and valleys alternately and multiplely, and is formed in the same shape as the opening of the jar, and the opening is sealed by the seal while heating.
  • FIG. 1 is a longitudinal sectional view of a main part of a jar with a sealing seal according to the present invention.
  • FIG. 2 is a wide-mouthed bottle showing an expanded state of the sealing seal according to the reduced pressure in the bottle according to the present invention. The upper vertical section of the is.
  • FIG. 3 is a plan view showing one embodiment of the hermetic seal of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
  • reference numeral 1 denotes a sealing seal according to the present invention, which is a sheet obtained by laminating a synthetic resin film on an aluminum sheet or aluminum foil.
  • the sheet used in the present invention is not limited to this.
  • Reference numeral 2 denotes a thin-walled wide-mouth bottle whose body 3 is made of synthetic resin such as PET (polyethylene terephthalate) or a blend of PET and PEN (polyethylene naphthalate). It is formed by stretching blow.
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • the seal 1 is formed by punching the sheet having a thickness of about 0.1 and having a certain degree of extensibility into the same shape as the opening of the wide-mouthed bottle 2 having a diameter of about 65 Omm.
  • the sealing surface 11 is formed by pressing into a flat peripheral portion and an expandable portion formed inside the peripheral portion.
  • the peripheral portion is made flat so that even if it is formed with an eccentric force, it is not processed so as to prevent adhesion failure when joining the seal to the opening of the jar. ing.
  • the expandable portion includes a concentric bellows 12 as shown in FIG.
  • the bellows 12 is formed such that the adjacent peaks and valleys are bent four times at a height difference of about 1 to 1.5 ii at an interval of about 4 to 6 hidden. At this time, the bending interval, the height difference, and the number are determined as appropriate depending on the diameter of the opening of the bottle, and are not limited to the above values.
  • the seal 1 thus formed is provided by bonding the outer peripheral surface to the opening edge of the bottle with a pressure-sensitive adhesive or hot melt.
  • Such an expandable portion of the bellows 12 of the seal 1 is in a state where it is easily forcibly extended by a press and expanded and deformed into a spherical shape on one side than the peripheral portion 13.
  • the bottle opening portion is immediately sealed with the seal 1 and left alone.
  • Volume expansion due to heating of the water contained in the container 4 is reduced, and the pressure in the bottle is reduced.
  • the volume expansion coefficient of water cause the 1. 8 X 1 0- since it is 4, for example at room temperature the contents 4 comprising heating filling temperature 9 0 ° C in the filled moisture 1 0 0 cc (2 0 ° C ) until the cooling, 1 0 0 X (9 0 -.. 2 0)
  • XI 8 X 1 0- 4 1 2 6 Ri
  • cc fraction of volume reduction, in the bottle by that amount is to be reduced pressure Become.
  • the sealing surface 11 is pulled into the bottle by the decompression due to the cooling.
  • the seal itself has a certain degree of extensibility, even if the bellows 12 is not formed, the seal expands spherically into the bottle by a tensile force due to the reduced pressure. The force is extremely small and does not prevent the body 3 from being deformed under reduced pressure.
  • the bellows 12 formed so as to be further expanded by the press causes the sealing surface 11 to be further spherical into the bottle as shown in FIG. To be extended to As a result, decompression deformation in the body 3 is prevented.
  • the installation of the cap 5 is most preferably performed after the contents 4 have been cooled to near room temperature and little decompression has occurred in the bottle. However, since cooling takes time, the cap 5 is attached after the bottle opening is sealed with the seal 1.
  • a packing 6 or a rubber ring (not shown) for sealing the opening after peeling off the seal 1 is fitted inside the cap 5.
  • the cap 5 is fastened to the outer periphery of the mouth by means of screws or fitting, and sealing is performed by the packing 6 or the like.
  • step portion 1 2 of the illustrated seal 1 is formed concentrically
  • the shape may be spiral, or may be alternately bent in parallel.
  • the prevention of the deformation of the body 3 under reduced pressure by expanding the seal 1 is extremely effective for a wide-mouthed bottle whose formation of the panel surface is restricted for the above-mentioned reason. Also, since it is only necessary to seal the opening with the seal 1, the structure does not become particularly complicated, and when it is used for a wide-mouthed bottle with a panel surface, it is coupled with the deformation due to the panel surface. The effect becomes more remarkable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Closures For Containers (AREA)

Abstract

A seal for sealing the mouth of a thin wide-mouthed bottle having a body formed by stretching blow molding, and a wide-mouthed bottle having a mouth sealed by the seal. A synthetic resing laminate sheet comprising an aluminum sheet or an aluminum foil as a base is punched into the same shape as the bottle mouth to form a seal. A flat peripheral portion and bellows formed by bending the sheet into alternate multiple mountain and valley portions inside the peripheral portion are sumiltaneously formed by press molding. The bellows are shaped concentrically or spirally and prevents deformation of the body resulting from cooling and pressure reduction inside the bottle.

Description

明細書  Specification

密閉用シールおよびそれにより密閉された広口瓶 技術分野  Hermetic seals and jars sealed thereby

本発明は、 密閉用シールおよびそれにより密閉された広口瓶に関し、 さらに詳 しくはその胴部が延伸ブロー成形により薄肉に形成された合成樹脂の広口瓶の開 口部を密閉するシールならびにそれにより密閉された広口瓶に関するものである。 背景技術  The present invention relates to a seal for sealing and a jar sealed by the seal, and more particularly, to a seal for sealing an opening of a synthetic resin jar having a thin body formed by stretch blow molding, and a seal thereby. It relates to a sealed jar. Background art

射出成形したプリフォームを延伸ブローして成形したボトルや広口瓶は、 その 胴部が約 0 . 3 mmの薄肉に形成されている。 そのため、 内容物を加熱充填し直ち にキヤップによりにその開口部を密閉すると、 '冷却による瓶内の減圧に伴なつて、 胴部が内側に引っ張られ変形する。  Bottles and jars formed by stretch-blowing injection-molded preforms have a thin wall of approximately 0.3 mm. Therefore, if the opening is closed with a cap immediately after the contents are heated and filled, the body is pulled inward and deformed due to the pressure reduction in the bottle due to cooling.

この変形は瓶胴部の肉厚分布の差から、 最も薄肉の部分に集中して生じ易く、 瓶の外観形状が著しく損なわれる。 胴部の平断面形状が円形のボトルゃ広口瓶で はこの問題を解消するために、 胴部の平断面形状を多角形に形成して、 胴壁部を 内側へ撓み易いパネル面に形成する。 これにより減圧による胴部の部分的な変形 を防止すると共に、 均一に胴壁部のパネル面を弯曲変形させることにより、 もつ て外観を整えるようにしている。  This deformation tends to concentrate on the thinnest part due to the difference in the wall thickness distribution of the bottle body, and the appearance of the bottle is significantly impaired. To solve this problem for bottles with a round torso section and a wide-mouth bottle, the torso section is formed into a polygonal shape, and the torso wall is formed on a panel surface that is easily bent inward. . This prevents partial deformation of the torso due to decompression, and at the same time, makes the panel surface of the torso wall uniform so as to improve the overall appearance.

このパネル面の撓みの度合いは、 パネル面の面積に比例する。 しかし飲料水や ジュースなどの夜体を入れるボトルとは異なって、 ジャム、 ピーナッツバタ一、 蜂蜜などの粘稠性を有する内容物を入れる広口瓶では、 パネル面の形成により生 じた内側面のコーナ一部に内容物が残り易い。 コーナ一部が深くなるほどスプ一 ンなどによる搔き出しも困難となることと、 胴部外周にはラベルなど力施される ことなどから、 成形されるパネノレ面の面積にも限界があり、 パネル面によらない 胴部の減圧変形が防止可能な新たな手段力望まれている。 発明の開示 The degree of bending of the panel surface is proportional to the area of the panel surface. However, unlike bottles for drinking water and juice, which are used to store night foods, wide-mouthed bottles for storing viscous contents such as jam, peanut flour, and honey have an inner surface created by the formation of panel surfaces. The contents easily remain in some corners. Because the deeper the corners, the more difficult it is to expose with a spoon, etc., and the outer periphery of the body, such as by applying a label, etc., there is a limit to the area of the molded panel surface. There is a need for a new means capable of preventing the decompression deformation of the torso irrespective of the surface. Disclosure of the invention

本発明は、 上記要望により考えられたものであって、 その目的は、 広口瓶の開 口部を密閉するシールを、 内容物の冷却による瓶内の減圧に伴い拡張可能とする ことで、 胴部の減圧変形を防止することができる延伸ブロー成形による広口瓶の 密閉用シールおよびそれにより密閉された広口瓶を提供することにある。  The present invention has been conceived in view of the above demands, and has as its object to provide a seal that seals the opening of a wide-mouthed bottle, which can be expanded with decompression inside the bottle due to cooling of the contents. It is an object of the present invention to provide a seal for sealing a wide-mouth bottle by stretch blow molding capable of preventing the deformation of a part under reduced pressure, and a wide-mouth bottle sealed thereby.

上記目的による本発明の特徴は、 延伸ブロー成形による広口瓶開口部の密閉用 シールであって、 該シールは平坦な周辺部とその内側の拡張可能部からなる密閉 用シールを提供することである。 また、 このときに形成される拡張可能部は交互 に多重に山部谷部に折曲げ形成された蛇腹として形成されている。  A feature of the present invention for the above object is to provide a seal for sealing a mouth opening of a jar by stretch blow molding, the seal comprising a flat peripheral portion and an expandable portion inside the peripheral portion. . The expandable portions formed at this time are formed as bellows which are alternately and multiplely bent into peaks and valleys.

ここで、 シールは、 アルミシート又はアルミ箔をべ一スとし、 それに合成樹脂 フィルムをラミネ一トしたラミネ一トシ一トからなることが好ましい。  Here, the seal is preferably made of an aluminum sheet or an aluminum foil as a base, and a lamination sheet obtained by laminating a synthetic resin film.

またシールに形成されている蛇腹は同心円状あるいは渦巻き状であることが好 ましく、 その蛇腹の山部谷部の高低差は約 1 〜 1 . 5腦、 隣接する山部谷部の間 隔は約 4 〜 6 mmであること力好ましい。  The bellows formed on the seal are preferably concentric or spiral, and the height difference between the peaks and valleys of the bellows is about 1 to 1.5 cubic meters, and the gap between adjacent mountain valleys is Is preferably about 4 to 6 mm.

またさらに本発明の特徴は、 密閉用シールによってその開口部を密閉されてい る、 胴部が薄肉の延伸ブロー成形による広口瓶であって、 該密閉用シールは平坦 な周辺部とその内側の拡張可能な交互に多重に山部谷部に折曲げ形成された蛇腹 力形成されており、 該広口瓶の開口部と同形に形成されており、 そのシールによ り開口部を密閉する一方、 加熱充填した内容物の冷却による瓶内の減圧に伴う胴 部の変形を、 上記蛇腹によるシール面の瓶内への拡張により防止してなることを 特徴とする延伸ブロー成形による広口瓶を提供することである。 図面の簡単な説明  Still further, a feature of the present invention is a wide-mouthed bottle formed by stretch blow molding with a thin-walled body, the opening of which is sealed by a sealing seal, wherein the sealing seal has a flat peripheral portion and an inner expansion. It has a bellows force formed by bending in the peaks and valleys alternately and multiplely, and is formed in the same shape as the opening of the jar, and the opening is sealed by the seal while heating. To provide a wide-mouth bottle by stretch blow molding, characterized in that deformation of the body due to pressure reduction in the bottle due to cooling of the filled contents is prevented by expanding the sealing surface into the bottle by the bellows. It is. BRIEF DESCRIPTION OF THE FIGURES

第 1図は、 本発明による密閉用シールを備えた広口瓶の要部縦断面図である。 第 2図は、 本発明による瓶内の減圧に伴う密閉用シールの拡張状態を示す広口瓶 の上部縦断面がである。 第 3図は、 本発明の密閉用のシールの一実施例を示す平 面図である。 発明を実施するための最良の形態 FIG. 1 is a longitudinal sectional view of a main part of a jar with a sealing seal according to the present invention. FIG. 2 is a wide-mouthed bottle showing an expanded state of the sealing seal according to the reduced pressure in the bottle according to the present invention. The upper vertical section of the is. FIG. 3 is a plan view showing one embodiment of the hermetic seal of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

図中 1は本発明による密閉用のシールで、 アルミシート又はアルミ箔に合成樹 脂フィルムををラミネ一トしたシ一卜からなる。 本発明において使用されるシ一 トはこれに限定されない。 2は胴部 3が薄肉の広口瓶で、 P E T (ポリエチレン テレフタレ一ト） 、 P E Tと P E N (ポリエチレンナフタレ一ト） とのブレンド などの合成樹脂からなり、 射出成形された有底のプリフォームを延伸ブローして 成形したものである。  In the drawing, reference numeral 1 denotes a sealing seal according to the present invention, which is a sheet obtained by laminating a synthetic resin film on an aluminum sheet or aluminum foil. The sheet used in the present invention is not limited to this. Reference numeral 2 denotes a thin-walled wide-mouth bottle whose body 3 is made of synthetic resin such as PET (polyethylene terephthalate) or a blend of PET and PEN (polyethylene naphthalate). It is formed by stretching blow.

上記シール 1は、 厚さが 0. 1誦ほどで或る程度の伸展性を有する上記シート を、 口径 6 5 Omm程の広口瓶 2の開口部と同形に打抜形成して形成され、 その打 抜形成と同時にシール面 1 1を、 プレスにより、 平坦な周辺部と、 その内側に形 成された拡張可能部に形成している。 周辺部は、 その内部に形成される拡張可能 部力偏心して形成された場合でも、 広口瓶開口部にシールを接合する際に接着不 良が生じないように加工されておらず、 平坦とされている。 拡張可能部としては、 図 1に示されたような同心円の蛇腹 1 2があげられる。 蛇腹 1 2は、 その隣接す る山部と谷部が約 4〜 6隱の間隔にてその高低差約 1〜 1 . 5 i iに四重に折曲げ て形成されている。 この時、 折曲げの間隔ならびに高低差、 数については、 瓶開 口部の口径に依存して適宜決定されるものであり、 上記数値に限定されるもので はない。 こうして形成されたシール 1は、 瓶の開口縁に外周面を感圧性接着剤や ホットメルトなどにより接着して設けられる。  The seal 1 is formed by punching the sheet having a thickness of about 0.1 and having a certain degree of extensibility into the same shape as the opening of the wide-mouthed bottle 2 having a diameter of about 65 Omm. At the same time as punching, the sealing surface 11 is formed by pressing into a flat peripheral portion and an expandable portion formed inside the peripheral portion. The peripheral portion is made flat so that even if it is formed with an eccentric force, it is not processed so as to prevent adhesion failure when joining the seal to the opening of the jar. ing. The expandable portion includes a concentric bellows 12 as shown in FIG. The bellows 12 is formed such that the adjacent peaks and valleys are bent four times at a height difference of about 1 to 1.5 ii at an interval of about 4 to 6 hidden. At this time, the bending interval, the height difference, and the number are determined as appropriate depending on the diameter of the opening of the bottle, and are not limited to the above values. The seal 1 thus formed is provided by bonding the outer peripheral surface to the opening edge of the bottle with a pressure-sensitive adhesive or hot melt.

このようなシール 1の蛇腹 1 2の拡張可能部は、 プレスにより強制的に伸展さ れて周辺部 1 3よりも片面側に球面状に拡張変形し易い状態にある。  Such an expandable portion of the bellows 12 of the seal 1 is in a state where it is easily forcibly extended by a press and expanded and deformed into a spherical shape on one side than the peripheral portion 13.

上記広口瓶 2にジャムなどの粘稠性を有する内容物 4を加熱充填した後、 直ち にシール 1により瓶開口部を密閉して放置すると、 内容物 4の冷却に伴って、 内 容物 4に含有される水分の加熱による体積膨張が低減して瓶内が減圧されていく。 因に水の体積膨張係数は 1 . 8 X 1 0— 4であることから、 たとえば加熱充填温度 9 0 °Cで充填された水分を 1 0 0 cc含む内容物 4を室温 （ 2 0 °C) まで冷却した とき、 1 0 0 X ( 9 0 - 2 0 ) X I . 8 X 1 0—4 = 1 . 2 6 cc分の体積減少とな り、 その分だけ瓶内は減圧されることになる。 上記シール 1では、 この冷却に伴 う減圧によってシール面 1 1が瓶内へと引っ張られる。 After the viscous content 4 such as jam is filled in the wide-mouthed bottle 2 by heating, the bottle opening portion is immediately sealed with the seal 1 and left alone. Volume expansion due to heating of the water contained in the container 4 is reduced, and the pressure in the bottle is reduced. The volume expansion coefficient of water cause the 1. 8 X 1 0- since it is 4, for example at room temperature the contents 4 comprising heating filling temperature 9 0 ° C in the filled moisture 1 0 0 cc (2 0 ° C ) until the cooling, 1 0 0 X (9 0 -.. 2 0) XI 8 X 1 0- 4 = 1 2 6 Ri Do and cc fraction of volume reduction, in the bottle by that amount is to be reduced pressure Become. In the seal 1 described above, the sealing surface 11 is pulled into the bottle by the decompression due to the cooling.

シール自体はある程度の伸展性を有することから、 上記蛇腹 1 2が形成されて いなくとも、 減圧による引張力により瓶内へと球面状に拡張する。 し力、し、 それ は極めて僅かなものであり、 胴部 3の減圧変形を防止するには至らない。 しかし ながら、 上記シール 1ではシール自体の伸展性に加えて、 プレスにより更に拡張 するように形成された蛇腹 1 2によって、 図 2に示されるようにシール面 1 1が 一段と瓶内へと球面状に拡張するようになる。 この結果、 胴部 3における減圧変 形が防止される。  Since the seal itself has a certain degree of extensibility, even if the bellows 12 is not formed, the seal expands spherically into the bottle by a tensile force due to the reduced pressure. The force is extremely small and does not prevent the body 3 from being deformed under reduced pressure. However, in the seal 1 described above, in addition to the extensibility of the seal itself, the bellows 12 formed so as to be further expanded by the press causes the sealing surface 11 to be further spherical into the bottle as shown in FIG. To be extended to As a result, decompression deformation in the body 3 is prevented.

キヤップ 5の取付けは、 内容物 4が室温近くまで冷却されて瓶内の減圧が殆ど 生じなくなった後に行われるの力最も好ましい。 しかし、 冷却には時間を要する ので、 シール 1により瓶開口部の密閉を行った後に、 キャップ 5の取付けが行わ れることになる。  The installation of the cap 5 is most preferably performed after the contents 4 have been cooled to near room temperature and little decompression has occurred in the bottle. However, since cooling takes time, the cap 5 is attached after the bottle opening is sealed with the seal 1.

キャップ 5の内側には上記シール 1を剥がした後の開口の密封を行うパッキン 6、 あるいはゴムリング （図示せず） 等が嵌め込んである。 ねじ又は嵌合等の手 段をもってキャップ 5を口部外周に締め付けて、 上記パッキン 6などにより密封 を行っている。  A packing 6 or a rubber ring (not shown) for sealing the opening after peeling off the seal 1 is fitted inside the cap 5. The cap 5 is fastened to the outer periphery of the mouth by means of screws or fitting, and sealing is performed by the packing 6 or the like.

内容物 4の冷却の過程でキヤップ 5により密封を完全に行うと、 外気の遮断に よって、 開口部を密閉しているシール 1とパッキン 6との間への空気の流通が損 なわれ、 冷却により瓶内力減圧を始めてもシール 1が拡張せず、 胴部 3力《減圧変 形して、 シ一ル 1による減圧変形防止の効果はなくなる。 そこでシール 1とパッ キン 6との間に、 負圧防止のための空気の流入が生ずる程度の締付力で、 キヤッ プ 5を締め付けて取付けを行うの力好ましい。 この時、 空気の流入があっても瓶 内はシール 1により密閉されているので、 内容物 4の外気との遮断は維持される c なお、 図示のシール 1の段部 1 2は同心円に形成されているが、 その形状は渦 巻状であつてもよく、 また交互に並列に折曲形成された状態にあつてもよい。 産業上の利用可能性 If the cap 5 is completely sealed in the process of cooling the contents 4, the flow of air between the seal 1, which seals the opening, and the packing 6 is impaired by shutting off outside air, and cooling As a result, even when the pressure in the bottle is reduced, the seal 1 does not expand even if the pressure in the bottle is reduced. Therefore, the tightening force between the seal 1 and the packing 6 is such that air flows in to prevent negative pressure, and the It is preferable to tighten the step 5 for mounting. At this time, since the bottle even if the inflow of air is sealed by the seal 1, Note c is cut off with the outside air of the contents 4 are maintained, step portion 1 2 of the illustrated seal 1 is formed concentrically However, the shape may be spiral, or may be alternately bent in parallel. Industrial applicability

このようにシール 1の拡張による胴部 3の減圧変形防止は、 前述の理由からパ ネル面の形成に制限を受ける広口瓶にきわめて効果的である。 またシール 1によ り開口を密閉するだけでよいから構造カ特に複雑となるようなこともなく、 パネ ル面を形成した広口瓶に採用した場合には、 そのパネル面による変形と相俟って その効果が一層顕著なものとなる。  Thus, the prevention of the deformation of the body 3 under reduced pressure by expanding the seal 1 is extremely effective for a wide-mouthed bottle whose formation of the panel surface is restricted for the above-mentioned reason. Also, since it is only necessary to seal the opening with the seal 1, the structure does not become particularly complicated, and when it is used for a wide-mouthed bottle with a panel surface, it is coupled with the deformation due to the panel surface. The effect becomes more remarkable.

Claims

請求 の範囲 The scope of the claims 1 . 延伸プロ一成形による広口瓶開口部の密閉用シールであって、 該シールは平 坦な周辺部とその内側の拡張可能部からなる密閉用シ一ル。 1. A sealing seal for an opening of a jar formed by stretch molding, wherein the sealing comprises a flat peripheral portion and an expandable portion inside the sealing portion. 2. 前記拡張可能部は、交互に多重に山部谷部に折曲げ形成された蛇腹からなる 密閉用シール。 2. A seal for sealing, wherein the expandable portion is formed of bellows alternately and multiplely bent into a mountain valley. 3. 前記シールが、 アルミシート又はアルミ箔をベースとし、 それに合成樹脂フ ィルムをラミネ一トしたラミネ一トシ一トからなることを特徴とする請求の範囲 第 1項あるいは第 2項に記載の密閉用シ一ル。 3. The seal according to claim 1 or 2, wherein the seal is made of an aluminum sheet or an aluminum foil as a base, and a laminate sheet obtained by laminating a synthetic resin film thereon. Sealing seal. 4. 前記シールに形成されている蛇腹が同心円状であることを特徴とする請求の 範囲第 2項あるいは第 3項に記載の密閉用シ一ル。 4. The sealing seal according to claim 2, wherein the bellows formed on the seal is concentric. 5 . 前記シールに形成されている蛇腹が渦巻き状であることを特徴とする請求の 範囲第 2項あるいは第 3項に記載の密閉用シ一ル。 5. The sealing seal according to claim 2, wherein a bellows formed in the seal is spiral. 6. 前記シールに形成されている蛇腹の山部谷部の高低差力約 1 ~ 1 . 5讓であ ることを特徴とする請求の範囲第 2項から第 5項のいずれかに記載の密閉用シ一 ル。 6. The method according to any one of claims 2 to 5, wherein the difference in height between the peaks and valleys of the bellows formed in the seal is approximately 1 to 1.5 sq. Sealing seal. 7. 前記シールに形成されている蛇腹の隣接する山部谷部の間隔が約 4〜 6 mmで あることを特徴とする請求の範囲第 2項から第 6項のいずれかに記載の密閉用シ —ル。 7. The hermetic seal according to any one of claims 2 to 6, wherein an interval between adjacent peaks and valleys of the bellows formed in the seal is about 4 to 6 mm. Sir. 8 . 密閉用シールによってその開口部を密閉されている、 胴部が薄肉の延伸プロ —成形による広口瓶であって、 該密閉用シールは交互に多重に山部谷部に折曲げ 形成された蛇腹が形成されており、 該広口瓶の開口部と同形に形成されており、 そのシールにより開口部を密閉する一方、 加熱充填した内容物の冷却による瓶内 の減圧に伴う胴部の変形を、 上記蛇腹によるシール面の瓶内への拡張により防止 してなることを特徴とする延伸プロ一成形による広口瓶。 8. A wide-mouth bottle with a thin-walled stretch-molded body whose opening is sealed by a sealing seal, the sealing seals being alternately bent and formed into multiple peaks and valleys. A bellows is formed and is formed in the same shape as the opening of the jar, and the opening is sealed by the seal, while deformation of the body due to decompression in the bottle due to cooling of the heated and filled contents. A wide-mouth bottle made by stretching and forming, wherein the sealing surface is prevented from being extended into the bottle by the bellows. 9. 前記シールが、 アルミシート又はアルミ箔をべ一スとし、 それに合成樹脂フ ィルムをラミネ一トしたラミネ一トシ一卜からなることを特徴とする請求の範囲 第 8項に記載の広口瓶。 9. The wide-mouthed bottle according to claim 8, wherein the seal is made of a laminate sheet obtained by laminating an aluminum sheet or aluminum foil as a base and laminating a synthetic resin film thereon. . 1 0. 前記シールに形成されている蛇腹が同心円状であることを特徴とする請求 の範囲第 8項あるいは第 9項に記載の広口瓶。 10. The wide-mouthed bottle according to claim 8, wherein the bellows formed on the seal is concentric. 1 1 . 前記シールに形成されている蛇腹が渦巻き状であることを特徴とする請求 の範囲第 8項あるいは第 9項に記載の広口瓶。 11. The wide-mouthed bottle according to claim 8, wherein the bellows formed on the seal has a spiral shape. 1 2. 前記シールに形成されている蛇腹の山部谷部の高低差が約 1 ~ 1 . 5腿で あることを特徴とする請求の範囲第 8項から第 1 1項のいずれかに記載の広口瓶。 12. The height difference of the bellows of the bellows formed in the seal is approximately 1 to 1.5 thighs, any one of claims 8 to 11 characterized by the above-mentioned. Wide-mouth bottle. 1 3. 前記シールに形成されている蛇腹の隣接する山部谷部の間隔が約 4〜6隱 であることを特徴とする請求の範囲第 8項から第 1 2項のいずれかに記載の広口 瓶。 1 3. The method according to any one of claims 8 to 12, wherein the interval between adjacent peaks and valleys of the bellows formed on the seal is approximately 4 to 6 hidden. Wide-mouth bottle.
PCT/JP1998/003092 1997-07-11 1998-07-10 Hermetic seal and wide-mouthed bottle sealed by the seal Ceased WO1999002418A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98931036A EP0943553A4 (en) 1997-07-11 1998-07-10 Hermetic seal and wide-mouthed bottle sealed by the seal
US09/254,788 US6164470A (en) 1997-07-11 1998-07-10 Hermetic seal and wide-mouthed bottle sealed by the seal
AU81280/98A AU8128098A (en) 1997-07-11 1998-07-10 Hermetic seal and wide-mouthed bottle sealed by the seal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9186728A JPH1129161A (en) 1997-07-11 1997-07-11 Closed structure of wide port bottle formed by stretch blow molding process
JP9/186728 1997-07-11

Publications (1)

Publication Number Publication Date
WO1999002418A1 true WO1999002418A1 (en) 1999-01-21

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EP (1) EP0943553A4 (en)
JP (1) JPH1129161A (en)
AU (1) AU8128098A (en)
WO (1) WO1999002418A1 (en)

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Also Published As

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EP0943553A1 (en) 1999-09-22
US6164470A (en) 2000-12-26
JPH1129161A (en) 1999-02-02
AU8128098A (en) 1999-02-08
EP0943553A4 (en) 2000-07-26

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